- Microsoft.Owin.Security.OAuth - Middleware that enables an application to support any standard OAuth 2.0 authentication workflow.
- Microsoft.Owin.Security.Cookies - Middleware that enables an application to use cookie based authentication, similar to ASP.NET's forms authentication.
- Microsoft.Owin.Security.Google - Middleware to support Google's OpenId and OAuth 2.0 authentication workflows.
- Microsoft.Owin.Security.MicrosoftAccount - Middleware that enables an application to support the Microsoft Account authentication workflow.
- Microsoft.Owin.Security.Facebook - Middleware that enables an application to support Facebook's OAuth 2.0 authentication workflow.
- Microsoft.Owin.Security.Twitter - Middleware that enables an application to support Twitter's OAuth 2.0 authentication workflow.
- Microsoft.Owin.Diagnostics - Middleware to assist in developing OWIN-based applications.
- Microsoft.Owin.Security.Jwt - Middleware that enables an application to protect and validate JSON Web Tokens.
- Microsoft.Owin.StaticFiles - Middleware that handle requests for file system resources including files and directories.
- Microsoft.Owin.Security.ActiveDirectory - Middleware that enables an application to use Microsoft's technology for authentication.
- Nowin - Owin Web Server in pure .NET
- Microsoft.Owin.Host.SystemWeb - OWIN server that enables OWIN-based applications to run on IIS using the ASP.NET request pipeline.
- Microsoft.Owin.Host.HttpListener - OWIN server built on the .NET Framework's HttpListener class. Currently the default server used for self-hosting.
- Microsoft.Owin.Host.IIS - Enables running an OWIN pipeline directly on top of IIS without going through the ASP.NET pipeline.
- ASP.NET Web API - A framework for building HTTP-based APIs
- ASP.NET SignalR - A framework for building bi-directional, real-time Web functionality
- Nancy - A lightweight framework for building Web applications
- FubuMVC - A “Front Controller” pattern-style MVC framework designed for use in web applications built on ASP.NET
- Simple.Web - A lightweight, object-oriented (Model-View-Handler) framework for modern web development in .NET
- duovia-http - A lightweight OWIN-based services library